unmount problem with Unetbootin

Bug #274389 reported by fabb on 2008-09-25
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Linux Mint
ubiquity (Ubuntu)

Bug Description

edit: this actually consists of two problems. the first one is old, the second breaks Unetbootin support /

I'm on Intrepid Alpha 6 here. booting from the live cd via Unetbootin works fine, but the first ntfs partition on sda1 is recognized and mounted in /CDROM. i can access it though, but that is not the problem.
edit: this also happend with 8.04. /

when i start the ubuntu installer, at the last step it shouts that it can't unmount /CDROM, whyever this is needed. but i can't unmount /CDROM, as the ubuntu livecd is booted from there via Unetbootin.
edit: this did NOT happen in 8.04. /

my harddrive has got 3 partitions: first is ntfs, second linux swap and third ext3. in the setup i did not change the partition table, just tell the installer to use the last partition as root. (un)checking the format checkbox doesn't make a difference.

Thanks for your bug report. I'm classifing this as fuse, but if a fuse developer thinks I'm off base please correct this.

ps: i wanted to add it to the intrepid installer package, but i don't know which this is.

description: updated
fabb (milkservice) wrote :

the first problem, that the unetbootin partition (in my case the first ntfs partition) is recognized as cdrom, has got further impact:
after installing, the ntfs partition will be inserted as cdrom into /etc/fstab and NO MORE BE ACESSIBLE as the filesystem now isn't recognized automatically any more.

the line in fstab will be as for every other cdrom device:
/dev/sda1 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0

fabb (milkservice) wrote :

It also happens with the new Linux Mint 6 (final). In the installer, NO partitions are displayed at all.

Which version of unetbootin? Is this still a problem in Gloria?

summary: - Intrepid installer unmount problem with Unetbootin
+ [ubiquity] unmount problem with Unetbootin
Changed in linuxmint:
status: New → Incomplete
tags: added: ubiquity
removed: installer intrepid
Philip Morrell (emorrp1) on 2009-07-14
tags: removed: fuse ubiquity unetbootin
Philip Morrell (emorrp1) on 2009-07-20
Changed in fuse (Ubuntu):
status: New → Incomplete
summary: - [ubiquity] unmount problem with Unetbootin
+ unmount problem with Unetbootin
tags: added: ubiquity
Philip Morrell (emorrp1) on 2009-07-20
tags: removed: ubiquity
Tom Jaeger (thjaeger) wrote :

This is clearly a bug in ubiquity: It thinks it needs to re-read the partition table but won't be able to do so because a partition is mounted on that disk and then aborts the installation. But in fact, the partition table doesn't change at all, so it could just continue.

Philip Morrell (emorrp1) wrote :

on advice from Tom Jaeger

Changed in fuse (Ubuntu):
status: Incomplete → Invalid
affects: fuse (Ubuntu) → ubiquity (Ubuntu)
Changed in ubiquity (Ubuntu):
status: Invalid → Incomplete
Tom Jaeger (thjaeger) wrote :

I should have said 'also'. There's still something funny going with the /cdrom partition that can't be unmounted despite fuser/lsof not reporting any open files, but fuse was the wrong package anyway.

Philip Morrell (emorrp1) wrote :

ahh well, ubiquity team will have a better way of knowing exactly what's causing it.

Niels Peen (niels-peen) wrote :

As a work-around (a dirty one), after you finish partitioning, remove the /cdrom line from /etc/mtab before you click Next.

Launchpad Janitor (janitor) wrote :

[Expired for ubiquity (Ubuntu) because there has been no activity for 60 days.]

Changed in ubiquity (Ubuntu):
status: Incomplete → Expired
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